She was a 'jonkvrouw', which is one step lower then a baroness. Her mother is a polish Countess and her maternal grandmother was a Princess Sapieha (also polish nobility). The King elevated Mathilde's family from jonkheer/jonkvrouw to Counts and Countesses upn Mathilde's marriage.

The King elevated Mathilde's family from jonkheer/jonkvrouw to Counts and Countesses upon Mathilde's marriage.

And they're not looking back! Pallavicini is a grand name for a grand family.

This information courtesy of Jeannick at the BRMB:

Alfonso, Marchese Pallavicini was born at Treviso on July 5th, 1964 as the first son and first child of the late Marchese Carlo Alessandro (1923-2004) and Avagora, n&#233;e Contessa degli Azzoni Avagadro (1926-). His has one brother, Marchese Edoardo (1965-). His uncle, Marchese Federico married in 1961 Duchess Helene of W&#252;rttemberg, elder sister of the actual Head of the Royal House of W&#252;rttemberg, Duke Carl.